"We need to keep learning and remembering all our lives," they write. "Getting ahead at work takes mastery of job skills and difficult colleagues ... If you're good at learning, you have an advantage in life."

And to learn something is to be able to remember it, say the authors, two of whom are psychology professors at Washington University in St. Louis.

Unfortunately, lots of the techniques for learning that we pick up in school don't actually help with long-term recall — like cramming or highlighting.

To get over these bad habits, we scoured "Make It Stick" for learning tips.

But be warned: If it's difficult, it's good thing.

"Learning is deeper and more durable when it's effortful," the authors write. "Learning that's easy is like writing in sand, here today and gone tomorrow."

Here are the takeaways:
Retrieval: Bring it back from memory.

When you're attempting to recall an idea, method, or technique from memory, you're retrieving. Flash cards are a great example: They force you to recall an idea from memory, unlike a technique like highlighting where you're not burning anything into your brain. The reason retrieval's so effective is that it strengthens the neural pathways associated with a given concept.
Elaboration: Connect new ideas to what you already know.

When you try to put a new idea into your own words, you're elaborating.

"The more you can explain about the the way your new learning relates to prior knowledge," the authors write, "the stronger your grasp of the new learning will be, and the more connections you create that will help you remember it later."

For instance, if you're in physics class and trying to understand heat transfer, try to tie the concept into your real-life experiences, like by imagining how a warm cup of coffee disperses heat into your hands.
Interleaving: Varying your subjects.

When you work on a variety of things at once, you're interleaving. If you're trying to understand a subject — from the basics of economics to hitting a pitch — you're going to learn better if you mix up your examples. A sports case: Batters who do batting practice with a mix of fastballs, change ups, and curveballs hit for a higher average. The interleaving helps because when you're out there in the wild, you need to first discern what kind of problem you're facing before you can start to find a solution, like a ball coming from a pitcher's hand.Generation: Answer before you have an answer.

Page 2 of 3 - When you try to give an answer before it's given to you, you're generating. "By wading into the unknown first and puzzling through it, you are far more likely to learn and remember the solution than if somebody first sat down to teach it to you," the authors write. In an academic setting, you could work finding your own answers before class starts. In a professional setting, you could supply your own ideas when you're stuck before talking with your boss.
Reflection: Evaluate what happened.

When you're using an acronym or image to recall something, you're using a mnemonic. The hall of fame includes abbreviations — Roy G. Biv for the colors of the spectrum (Red, Orange, Yellow, Green, Blue, Indigo, Violet) — and rhyming, like "in 1492, Columbus sailed the ocean blue."

"Mnemonics are not tools for learning per se," the authors write, "but for creating mental structures that make it easier to retrieve what you have learned."Calibration: Know what you don't know.

When you get feedback that reveals your ignorance to you, you're calibrating. "Calibration is simply the act of using an objective instrument to clear away illusions and adjust your judgment to better reflect reality." This is necessary since we all suffer from "cognitive illusions": We think we understand something when we really don't. So taking a quiz — or gathering feedback from a colleague — helps you to identify those blind spots.

For a deeper dig into the science of learning, make sure to pick up "Make It Stick." It's an illuminating read.